Floating solar power generation apparatus having mooring structure that uses most of minimum water level area and can respond to water level

Abstract

The present invention relates to a floating solar power generation apparatus having a mooring structure that uses most of the minimum water level area and can respond to water levels, and to a floating solar power generation apparatus having a mooring structure in which an anchor is provided along the edge of the minimum water level area in a floating environment such as a dam or a reservoir and the tension of a mooring rope can be maintained in response to water levels.

Description

A floating solar power plant that utilizes most of the lowest water level area and has a mooring structure capable of responding to water levels.

[0001] The present invention relates to a floating solar power generation device having a mooring structure capable of utilizing most of the lowest water level area and responding to the water level, and relates to a floating solar power generation device having a mooring structure in which anchors are installed along the edge of the lowest water level area in a water environment such as a dam or reservoir and the tension of a mooring rope is maintained in response to the water level.

[0002] Generally, the methods of utilizing solar energy are divided into the method of utilizing sunlight to generate electricity using sunlight to operate various machines and devices, and the method of utilizing solar heat to generate heat and electricity using water heated by the sun.

[0003] Solar power generation facilities that utilize sunlight are divided into stand-alone solar power generation facilities and grid-connected solar power generation facilities. Stand-alone solar power generation facilities are composed of solar cell arrays (solar panels) made up of multiple solar cell modules that generate electricity using sunlight; a storage battery that stores the electricity generated by the solar panels; a power conditioning device that ensures that the electricity generated by the solar panels is stored in the storage battery at a constant level or supplied to an external load; and an inverter and auxiliary generator that convert the direct current supplied by the storage battery and power conditioning device into alternating current.

[0004] These solar power plants have low energy density and require a large installation area, and securing space to install solar panels is a challenge in solar power generation due to limited installation locations.

[0005] As a way to secure the installation area of ​​the above solar panels, it may be considered to install them on the surface of rivers, lakes, reservoirs, dams, etc., where there is abundant sunlight and a large open area can be easily secured.

[0006] Accordingly, solar power concentrators are installed on water surfaces such as rivers, lakes, reservoirs, and dams, and it can be seen that structures for floating solar power generation, such as those disclosed in Korean Patent Publication Nos. 10-1503504 and 10-1595912, are being used.

[0007] As mentioned above, most solar power generation devices installed on the water surface have a structure with solar power generation modules that floats on the water surface by means of a buoyancy body. However, the buoyancy body shakes on the water surface that is swayed by wind or waves, and as a result, the solar panels also shake a lot, which hinders smooth solar power generation.

[0008] Therefore, in order to stably position the solar power generation module on the water surface, a mooring structure connected to a frame or buoyancy body supporting the solar power generation module is required.

[0009] However, the mooring structure of a typical floating solar power generation device has a disadvantage in that the anchor is installed on the outer side of the floating structure on which the solar power generation module is supported, which does not allow for sufficient use of the area of ​​the dam or reservoir.

[0010] In addition, as published in Korean Patent Publication No. 10-1642445, the mooring structure with the support has the disadvantage of low stability and excessive installation costs when the soft ground is deep, and low power generation efficiency due to the shadow generated by the support.

[0011] The present invention is intended to solve the above problems, and provides a floating solar power generation device having a mooring structure capable of responding to a water level, in which a mooring rope is connected to a floating structure below the floating structure, and an anchor is installed along the edge of the lowest water level area so that the lowest water level area can be utilized to a large extent, and a weight connected to a mooring rope extended vertically downward from the floating structure can move vertically according to the water level so that the tension of the mooring rope can be maintained in response to the water level, thereby utilizing most of the lowest water level area.

[0012] In order to solve the above problems, the present invention provides a floating solar power generation device having a mooring structure that uses most of the lowest water level area and is capable of responding to the water level, including: a floating body including a frame that supports solar power generation modules, and a buoyancy body that is connected to the frame and provides buoyancy; a plurality of anchors spaced apart at predetermined intervals along the edge of the floating body; a mooring rope having one end connected to the anchor and installed on the inner lower part of the floating body; a tension-maintaining weight that is connected to the other end of the mooring rope so as to extend vertically downward and maintain tension of the mooring rope; a winch installed on the edge of the floating body; and an auxiliary rope that is connected to one end of the mooring rope and is connected to be wound or unwound by the winch depending on the water level or the strength of the wind to pull or unwind the mooring rope upward.

[0013] The floating solar power generation device of the present invention, which uses most of the lowest water level area and has a mooring structure capable of responding to water levels, further comprises an interference prevention weight installed on the mooring rope between a pulley mounted on the floating body and which holds the mooring rope and an end of the auxiliary rope connected to the mooring rope, and it is preferable that the interference prevention weight be positioned closer to the pulley than to the auxiliary rope.

[0014] It is preferable that a plurality of the above anchors be installed along the edge of the lowest water level area of ​​the reservoir.

[0015] The floating solar power generation device of the present invention, which uses most of the lowest water level area and has a mooring structure capable of responding to the water level, may further include a centering maintenance rope that connects the other ends of the mooring ropes that extend vertically downward by the tension-maintaining weights connected to the other ends of the different pulleys, and has the other ends of the different mooring ropes penetrated at both ends so as to be relatively movable; and a pair of stoppers that are installed at a predetermined interval with one end or the other end of the centering maintenance rope interposed therebetween on each other end of the mooring rope that penetrates one end or the other end of the centering maintenance rope.

[0016] In addition, it is preferable that the floating solar power generation device of the present invention, which uses most of the lowest water level area and has a mooring structure capable of responding to water levels, further includes a pair of auxiliary weights installed at both ends of the centering maintenance rope and each of which passes through the other end of the different mooring ropes.

[0017] The floating solar power generation device of the present invention, which utilizes most of the lowest water level area and has a mooring structure capable of responding to the water level, has the other end of the mooring rope mounted on a pulley and a weight for maintaining tension connected to the other end, so that it floats stably in response to the water level, thereby improving power generation efficiency.

[0018] The floating solar power generation device of the present invention, which uses most of the lowest water level area and has a mooring structure capable of responding to the water level, can pull the mooring rope toward the float by winding an auxiliary rope around a winch so that the edge of the float is not lifted when the wind blows toward the edge of the float at a set wind speed or higher, thereby preventing the breakage of the cable transmitting power and fixing the south-facing direction without azimuth distortion, thereby improving the power generation efficiency.

[0019] In addition, the floating solar power generation device of the present invention, which utilizes most of the lowest water level area and has a mooring structure capable of responding to the water level, has an advantage of increasing the utilization efficiency of the reservoir because the anchor is installed along the edge of the lowest water level area and the floating body is formed to correspond to the lowest water level area.

[0020] FIG. 1 is a partial side view of a floating solar power generation device having a mooring structure that uses most of the lowest water level area and is capable of responding to water levels according to one embodiment of the present invention.

[0021] Figure 2 is a plan view of the floating solar power generation device of Figure 1,

[0022] Figure 3 is an enlarged view of a portion of the floating solar power generation device of Figure 1.

[0023] FIG. 4 is a side view of a floating solar power generation device having a mooring structure that uses most of the lowest water level area and is capable of responding to water levels according to another embodiment of the present invention.

[0024] FIG. 5 is a partial perspective view of a floating solar power generation device having a mooring structure that uses most of the lowest water level area and is capable of responding to water levels according to another embodiment of the present invention.

[0025] Hereinafter, with reference to the attached drawings, a floating solar power generation device having a mooring structure that utilizes most of the lowest water level area and is capable of responding to water levels according to the present invention will be described in detail.

[0026] Figures 1 to 3 illustrate a floating solar power generation device (1) having a mooring structure that uses most of the lowest water level area and is capable of responding to water levels according to one embodiment of the present invention.

[0027] Referring to FIGS. 1 to 3, a floating solar power generation device (1) having a mooring structure that uses most of the lowest water level area and is capable of responding to water levels according to an embodiment of the present invention comprises: a floating body (10) including a frame (11) that supports solar power generation modules (5) and a buoyancy body (16) that is coupled to the frame (11) and provides buoyancy; a plurality of anchors (30) that are arranged on the water surface at predetermined intervals along the edge of the floating body (10); a mooring rope (40) that has one end connected to the anchor (30) and is installed on the inner lower part of the floating body (10); a tension-maintaining weight (50) that is connected to the other end of the mooring rope (40) so as to extend vertically downward and maintain the tension of the mooring rope (40); a winch (60) that is installed on the edge of the floating body; An auxiliary rope (70) connected to one side of a mooring rope (40) and connected to be wound or unwound by a winch (60) depending on the water level or wind strength to pull or unwind the mooring rope (40) upward; and an interference prevention weight (80) installed on the mooring rope (40) between a pulley (13) mounted on a floating body (10) and holding the mooring rope (40) and an end of the auxiliary rope (70) connected to the mooring rope (40).

[0028] A number of pulleys (13) are installed at a predetermined distance from the edge of the floating body (10) on the inner side and spaced apart from each other along the edge.

[0029] It is preferable that the mooring rope (40) be wound around the pulley (13) at least once.

[0030] It is preferable that the pulley (13) be formed in the shape of a cylindrical bar, and the frictional force can be adjusted according to the number of times the mooring rope (40) is wound. That is, the number of times the mooring rope (40) is wound can be adjusted according to the load applied to the floating body (10) due to wind, fluid resistance, and wave height.

[0031] And, referring to Fig. 3, a plurality of anchors (30) are installed along the edge (a) of the lowest water level area of ​​the reservoir, and mooring ropes connected to mutually adjacent anchors (30) are connected to a plurality of pulleys (13) installed on a floating body (10) in a manner of crossing each other.

[0032] The minimum water level area refers to the area of ​​the water surface at the minimum pool level. The minimum pool level is the lowest water level that can normally be used in a reservoir, and it also refers to the highest water level of a reservoir that is not being used.

[0033] The anti-interference weight (80) is to keep the mooring rope (40) downward from the buoyancy body (16) so that it does not interfere with the buoyancy body (16) or the frame (11) when the auxiliary rope (70) is wound on the winch (60) and pulls the mooring rope (40) upward.

[0034] The auxiliary rope (70) is connected to one side of the mooring rope (40) adjacent to the anchor (30) by a U-bolt (74) so ​​as to be able to move relative to it, and the anti-interference weight (80) is connected to the mooring rope (40) so as to be positioned closer to the pulley (13) than the auxiliary rope (70).

[0035] When the mooring rope (40) is extended horizontally or upwardly by being pulled by the auxiliary rope (70), the weight of the interference prevention weight (80) is applied so that the mooring rope (40) does not interfere with the buoyancy body (10) and sag.

[0036] As shown in Fig. 2, the weight of the interference prevention weight (80) can be reflected by using the angle θ° between the horizontal extension line (l) of the mooring rope (40) from the auxiliary rope (70) to the position of the interference prevention weight (80) and the inclined line (l') of the mooring rope (40) between the interference prevention weight (80) and the pulley (13).

[0037] As an example, the weight of the interference prevention weight (80) can be applied as a value obtained by multiplying sinθ by the load of the tension maintenance weight (50).

[0038] A floating solar power generation device (1) having a mooring structure capable of responding to water levels and using most of the lowest water level area according to one embodiment of the present invention may further include, although not shown, a water level sensor mounted on one side of a floating body (10) to detect a water level, an anemometer to detect wind speed, and a control unit to control the operation of a winch (60) according to the water level sensor and wind speed.

[0039] The operation and effect of a floating solar power generation device (1) having a mooring structure capable of responding to water levels and using most of the lowest water level area according to one embodiment of the present invention having the above structure are as follows.

[0040] According to one embodiment of the present invention, a floating solar power generation device (1) having a mooring structure capable of using most of the lowest water level area and responding to the water level has the other end of the mooring rope (40) mounted on a pulley (13) and a weight (50) for maintaining tension is connected to the other end, so that the tension of the mooring rope (40) can be maintained in response to the water level, and further, the floating body (10) can float stably, thereby improving the power generation efficiency.

[0041] According to one embodiment of the present invention, a floating solar power generation device (1) having a mooring structure capable of using most of the lowest water level area and responding to the water level can, when the wind blows toward the edge of the floating body (10) at a set wind speed or higher, pull the mooring rope (40) toward the floating body (10) by winding the auxiliary rope (70) around the winch (60) by the control unit so that the edge of the floating body (10) is not lifted, thereby preventing the breakage of a cable (not shown) extended to land to transmit power generated from the solar power generation module (5), and fixing the south-facing direction without azimuth distortion, thereby improving power generation efficiency.

[0042] In this way, the floating solar power generation device (1) having a mooring structure capable of responding to the water level and using most of the lowest water level area according to one embodiment of the present invention can respond to the changing environment by winding or releasing the auxiliary rope (70) according to the water level or the wind speed blowing toward the edge of the floating body (10), thereby allowing the floating body (10) to float stably, and thus the solar power generation efficiency can be improved.

[0043] And, a floating solar power generation device (1) having a mooring structure capable of using most of the lowest water level area and responding to the water level according to an embodiment of the present invention has an advantage of increasing the utilization efficiency of the reservoir because an anchor (30) is installed along the edge of the lowest water level area and a floating body (10) is formed to respond to the lowest water level area.

[0044] Meanwhile, FIG. 4 illustrates a floating solar power generation device (1') having a mooring structure capable of responding to water levels and utilizing most of the lowest water level area according to another embodiment of the present invention. Components having the same functions as those in the previously illustrated drawings are indicated with the same reference numerals.

[0045] A floating solar power generation device (1') having a mooring structure capable of responding to water levels and using most of the lowest water level area according to another embodiment of the present invention further includes a plurality of centering maintenance ropes (90) and a plurality of pairs of stoppers (96) in addition to the structure according to one embodiment of the present invention.

[0046] The centering maintenance rope (90) is extended to connect the other ends of the vertically extending mooring ropes (40) by means of tension-maintaining weights (50) connected to each other end and mounted on each pulley (13) in the opposite direction.

[0047] The other ends of different mooring ropes (40) can be formed in a ring shape so that they can be relatively movable through the center reel maintenance rope (90).

[0048] A general rope can be applied as the centering maintenance rope (90), and an elastic rope made of a material with a long extension can also be applied.

[0049] A pair of stoppers (96) are installed on each mooring rope (40) mounted on each pulley (13) in an opposite direction. A pair of stoppers (96) are fixedly installed on each other side of the mooring rope (40) penetrating one end or the other end of the centering maintenance rope (90) with one end or the other end of the centering maintenance rope (90) interposed therebetween at a predetermined interval.

[0050] The stopper (96) is formed in a disc shape and has a mooring rope (40) passing through the center. It can be fixed by being fused to the mooring rope (40) or fixed to the mooring rope (40) by a pin (not shown) passing through the stopper (96).

[0051] The centering maintenance rope (90) is mounted on the mooring rope (40) so as to be able to move up and down by a distance equal to the distance between a pair of stoppers (96), but when a floating object (10) moves in one direction by more than the distance between a pair of stoppers (96) due to a strong wind, the centering maintenance rope (90) connecting different mooring ropes (40) restricts the mooring rope (40) that is lowered vertically downward toward the pulley (13) from descending to less than a predetermined distance, or restricts the mooring rope (40) that is raised vertically toward the pulley (13) from rising more than a predetermined distance.

[0052] A floating solar power generation device (1') having a mooring structure capable of responding to water levels and using most of the lowest water level area according to another embodiment of the present invention has the advantage of being able to easily maintain the center on the water surface by a centering maintenance rope (90) connecting different mooring ropes (40) when a floating body (10) moves in one direction due to a strong wind.

[0053] FIG. 5 illustrates a floating solar power generation device (1") having a mooring structure that uses most of the lowest water level area and is capable of responding to water levels according to another embodiment of the present invention. Components having the same function as those in the previously illustrated drawings are indicated by the same reference numerals.

[0054] A floating solar power generation device (1") having a mooring structure capable of using most of the lowest water level area and responding to water levels according to another embodiment of the present invention further includes a plurality of pairs of auxiliary weights (93) in the structure of another embodiment of the present invention.

[0055] A pair of auxiliary weights (93) are installed at both ends of the centering maintenance rope (90), and the other ends of different mooring ropes (40) are respectively passed through them and positioned between a pair of stoppers (96).

[0056] It is desirable that the auxiliary weight (93) have a weight less than the interference prevention weight (80).

[0057] According to another embodiment of the present invention, a floating solar power generation device (1") having a mooring structure capable of using most of the lowest water level area and responding to water levels is provided with auxiliary weights (93) having a weight that passes through the mooring rope (40) at both ends of a centering maintenance rope (90) connecting mooring ropes (40) in opposite directions, so that the efficiency of suppressing the movement of the floating body (10) due to strong winds or waves can be improved.

[0058] The present invention described above has been described with reference to an example shown in the drawings, but this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible.

[0059] Therefore, the true scope of technical protection of the present invention should be determined by the technical idea of ​​the appended patent claims.

Claims

1. A floating body including a frame that supports a solar power generation module and a buoyancy body that is connected to the frame and provides buoyancy; A plurality of anchors arranged at regular intervals along the edge of the above-mentioned floating body; A mooring rope connected to the anchor and installed on the inner lower part of the buoy; A tension-maintaining weight connected to the other end of the mooring rope so that the other end of the mooring rope extends vertically downward to maintain the tension of the mooring rope; A winch installed on the edge side of the above-mentioned floating body; A floating solar power generation device having a mooring structure that uses most of the lowest water level area and is capable of responding to water levels, characterized by having an auxiliary rope that is connected to one side of the above mooring rope so as to be relatively movable and is connected to the winch so as to be wound or unwound depending on the water level or wind strength, thereby pulling or unwinding the above mooring rope upward.

2. In paragraph 1, An interference prevention weight is further provided on the mooring rope between the pulley mounted on the above-mentioned floating body and the end of the auxiliary rope connected to the above-mentioned mooring rope, The above anti-interference weight A floating solar power generation device having a mooring structure that uses most of the lowest water level area and is capable of responding to water levels, characterized in that it is positioned closer to the pulley than the auxiliary rope.

3. In the first paragraph, a plurality of said anchors A floating solar power generation device that uses most of the lowest water level area and has a mooring structure capable of responding to water levels, characterized by being installed along the edge of the lowest water level area of ​​the reservoir.

4. In paragraph 2, A centering maintenance rope having the other ends of the above mooring ropes extended vertically downwards and connected to each other by the tension-maintaining weights connected to each other at the other ends and having the other ends of the above mooring ropes penetrated at both ends so that the other ends of the above mooring ropes can move relative to each other; A floating solar power generation device having a mooring structure that uses most of the lowest water level area and is capable of responding to water levels, characterized in that it further comprises a pair of stoppers installed at a predetermined interval with one end or the other end of the centering maintenance rope interposed therebetween on the other side of the mooring rope penetrating one end or the other end of the centering maintenance rope.

5. In paragraph 4, A floating solar power generation device having a mooring structure that uses most of the lowest water level area and is capable of responding to water levels, characterized in that it further comprises a pair of auxiliary weights installed at both ends of the above-mentioned centering maintenance rope and through which the other ends of different above-mentioned mooring ropes are respectively penetrated.

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